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State feedback integral control of networked control systems with external disturbance

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5 Author(s)
H. Li ; Department of Computer Science and Technology, Tsinghua University, Beijing 100084, People's Republic of China ; Z. Sun ; H. Liu ; F. Sun
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This study addresses the stabilisation problem for a class of networked control systems (NCSs) with time delays and packet losses. Motivated by the fact that static state feedback control shows offset in the plant output when non-zero disturbance acts on NCSs, the proposed method emphasises the implementation issue and employs state feedback integral control to achieve non-zero disturbance rejection and zero steady-state error. The resulting closed-loop system is transformed into a discrete-time switched system, and the stability conditions are derived in terms of linear matrix inequalities (LMIs). The corresponding stabilising controller design technique is also developed based on the stability conditions. Simulation and experimental examples are given to illustrate the effectiveness of the obtained results.

Published in:

IET Control Theory & Applications  (Volume:5 ,  Issue: 2 )